Naphthalene CAS 91-20-3
Naphthalene yog cov xim tsis muaj xim, ci ntsa iab monoclinic siv lead ua. Nws muaj ib tug muaj zog tarry tsw. Nws yog ib qho yooj yim rau sublime ntawm chav tsev kub. Nws yog insoluble hauv dej, tab sis soluble hauv ether, ethanol, chloroform, carbon disulfide, benzene, thiab lwm yam. Naphthalene yog qhov tseem ceeb tshaj plaws condensed nplhaib hydrocarbon hauv kev lag luam. Nws yog siv los tsim phthalic anhydride, ntau yam naphthols, naphthylamines, thiab lwm yam. Nws yog ib qho nruab nrab rau kev tsim cov khoom siv hluavtaws, plasticizers, dyes, surfactants, hluavtaws fibers, txheej, tshuaj tua kab, tshuaj, tshuaj tsw qab, roj hmab additives thiab tshuaj tua kab.
| Qhov tshwm sim | Tsis muaj xim ib leeg inclined crystal nrog luster |
| Purity | ≥99.0% |
| Crystallizing Point | 79.7-79.8 ° C |
| Melting Point | 79-83 ° C |
| Boiling Point | 217-221 ° C |
| Flash Point | 78-79 ° C |
1.Dye intermediates
Naphthalene plays lub luag haujlwm tseem ceeb hauv kev tsim cov xim, tshwj xeeb tshaj yog cov xim nruab nrab. Kev lag luam naphthalene yog ib qho tseem ceeb raw khoom rau kev tsim ntau yam dyes thiab pigments, xws li indigo dyes thiab daj pigments. Tsis tas li ntawd, naphthalene tuaj yeem hloov mus rau hauv cov xim nruab nrab xws li β-naphthol, uas yog siv ntxiv hauv kev tsim cov dyes thiab pigments. Ntau lub teb chaws muaj kev faib sib txawv ntawm kev siv naphthalene, tab sis dye intermediates ib txwm muaj qhov chaw.
2. Roj hmab additives
Naphthalene feem ntau yog siv los ua ib qho ntxiv hauv kev ua cov roj hmab. Qhov kev siv no suav txog li 15% ntawm tag nrho kev siv naphthalene. Rubber additives ua lub luag haujlwm tseem ceeb hauv kev tsim cov roj hmab. Lawv tuaj yeem txhim kho cov khoom ntawm cov roj hmab, xws li txhim kho nws lub zog, ductility lossis huab cua tsis kam. Raws li cov roj hmab ntxiv, naphthalene muab cov haujlwm tshwj xeeb thiab cov yam ntxwv rau cov khoom siv roj hmab, ua rau lawv tsim nyog rau ntau yam kev thov.
3. Tshuaj tua kab
Naphthalene muaj qee yam kev siv tshuaj tua kab. Txawm hais tias kev siv naphthalene txawv ntawm ib lub tebchaws mus rau ib lub tebchaws, cov tshuaj tua kab muaj txog li 6% ntawm nws cov kev siv. Tshwj xeeb, hauv qee lub tebchaws, xws li Tebchaws Meskas, qhov kev faib ua feem siv los tsim cov tshuaj tua kab yog qhov loj. Tsis tas li ntawd, anthracene kuj tseem siv los ua tshuaj tua kab, koom nrog lwm yam kev siv xws li cov ntaub ntawv luminescent thiab dyes. Cov ntawv thov no qhia txog qhov tseem ceeb ntawm naphthalene thiab anthracene rau kev tswj kab tsuag hauv kev ua liaj ua teb thiab horticulture.
25kg / hnab
Naphthalene CAS 91-20-3
Naphthalene CAS 91-20-3
